Plant in Garyville, La., Sustained Damage Earlier This Week

Marathon Petroleum Corp. said the crude unit at its Garyville, La., oil refinery is expected to be operational by mid-June after the plant sustained damage in a tornado earlier this week.

The tornado damaged a cooling water system that serves part of the refinery, causing the No. 1 crude unit and other units to be taken offline, Marathon said. The company added that it doesn't expect total refinery output to be significantly hurt,...